Martin5000

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About Martin5000

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    Malmö, Sweden
  1. ICH9R RAID5 performance

    The problem appears to be solved :-) At first I tried all kinds of combinations like six disk "hw" raid five, two three disk "hw" raid 5 with OS raid 0 on top, three "hw" raid 0 with OS raid 5 and what not. Trying a linux live cd was the only thing that could get the performance above 10MB/s, so I started going through EVERYTHING I had installed... Before I think I used the newest drivers from ASUS, but today I installed the latest Matrix Storage Manager from Intels site. Before it was version 7.5.something and now it's 7.8.*. Performance went from roughly 5MB/s avg. throughput to almost 100MB/s :-) Thanx for the input, Justin
  2. Intel Matrix Storage Manager and AHCI

    I haven't tried running single drives with AHCI, but I'm running a six disk raid 5 array on ICH9R and I've just updated the Matrix Storage Manager and saw HUGE performance increase (from 5MB/s avg to 99MB/s avg). I used the newest ASUS drivers before and upgraded to the latest Matrix Storage Manager on Intels website (7.5 upgraded to 7.8). I don't know if you can ise this info for anything, but for me the latest Matris Storage Manager definitely does work. - Martin
  3. ICH9R RAID5 performance

    The OS is installed on a separate disk attached to another controller (pata disk connected to the onboard JMicron <something> controller). The ICH9 RAID5 array was configured after the OS was installed. ATTO tops at 5MB/s write and 13 MB/s read (512k and 1024k). I'm using the following settings in ATTO: Transfer size: 0.5 - 1024kb Total length: 8MB Direct I/O checked Overlapped I/O selected with a queue depth of 4
  4. ICH9R RAID5 performance

    Hey I recently bought a Q6600, an Asus P5K-E and 4*1gb PC6400 ram for a new file and vmware server. The board has six sata ports controlled by ICH9R. I have attached six WD 200GB sata disks to these ports and configured a ~1TB RAID5 array using all of the six disks. I was aware that performance night not be stellar with onboard RAID5, BUT using HDtach3 I get an average of 6MB/s and Sisoft Sandra XII shows around 13MB/s average. This is is quite poor performance, but unfortunately real world performance is even worse. Copying files to the array over the network shows more like 0.3-3.0 MB/s (while other disks in the computer usually does around 15-35 MB/s when copying over the network). I know that stripe size and starting sector of the partition can influence alot and I've tried stripe sizes of 16k, 64k and 128k. as array initialization takes 15-36hrs depending on the stripe size, I haven't yet had time to try out all combinations and having the partition start at sector 2048 (instead of 63) has only been tried with 64k stripe size. I have tried with and without write back cache activated, but the difference is almost neglible. I'm running Win2003 ES with all updates, newest drivers and newest bios. Is this performance level normal for this configuration? Is there anything I can to to make it better? I'm content with 15-20 MB/s sequential read/write as the partition is just for storing and streaming movies. Any help and suggestions is highly appreciated. - Martin
  5. Maxtor Failures

    Two weeks ago I lost all music I have collected during the last ten years or so. It was all on a Maxtor OneTouch 200GB with USB2/FireWire interface. I think the drive got some bad sectors, as I get ALOT of IO errors when I try to do something with the disk (like recover files or format). The drive is a replacement drive I got from Maxtor a year ago when my old (and similar) disk had the same issues. Furthermore I have an internal DiamondMax9 120GB ATA disk with bad sectors (but thankfully I can still use the drive as it hasn't grown more bad sectors). I've bought alot of disks (maxtor, wd and seagate) the last 3-4 years and I haven't had any problems with the wd and seagate ones. Maybe I've been unlucky or maybe Maxtor has a problem... I'm going wd/seagate only for now.
  6. Are 36 inch ide cables reliable?

    I've used 3 feet rounded 80wire cables for several years (with two disks per cable). I've only had problems with one of them (of five in total). The faulty cable was from another manufacturer than the others, but unfortunately I don't know which brands they are. My advice is to go for the 3feet cables, but wait for a month or so before you rely on them (until then, keep a copy of the data on another disk attached to a cable within the specs). Do regular checks to see how it's working.
  7. Trashed Partition's for no reason... help...

    I just read your last post. Sounds more like a malware problem. Maybe one or more of the programs you usually install is infected by malware. Try moving all of it to a drive you can disconnect before reinstalling windows. You should even disconnect all other computers on the network (and the computer itself untill a firewall is up and running). After than you should only install from original CD/DVD or download again (and ONLY from trusted sources, like the company website). Before reconnecting everything again, you should make sure to have fully updated anti virus and a properly configured firewall installed. Use that computer to scan everything on the devices you disconnected. You could also try the first suggestions I made - just to be sure.
  8. Trashed Partition's for no reason... help...

    If possible, try another controller, other cables and maybe another PSU. I've had similar problems in the past. One time my PSU was overloaded and often made some of the drives disconnect, which on a few occations trashed the filetable. More recently I've had the partitiontables on four drives regularly crapping out. The were all connected to the same controller and another controller seems to have helped. I've also heard of faulty cables causing the filetable to be damaged in some cases. I know the probability of these things happening to both your home and work computers at almost the same time is extremely small... but nevertheless it might be worth a shot. Finally... whenever it happens, you should try a restore program to restore the contents of the disk. I've had good experiences with "Restorer2000" and "GetDataBack for NTFS", but the both require another harddrive to restore to. It might even work after a format (although I'm not sure now that you've lowlevel formatted the drive. Good luck /Martin
  9. Case for BIG RAID-5 server

    I too would suggest that you just keep your 24disk LianLi and put the two last drives in another computer. However, if stability is important, I'd recommend that you split the disks in two computers. I have 20 drives in my fileserver and I've had too many problems to recommend it to anyone. My problem is that with so many disks I have to use y-splitters wich is never as good as connecting the drives directly to the psu - it's been necessary to restore one or more drives alot of times because then lsot power and the partition table was trashed. IF you insist on having all the drives in one case, I'd probably recommend getting the biggest case you can find - like the Chieftec Jumbo something and mod it to fit all the drives and 3-4 good 300W PSUs (so you can connect each drive directly to a PSU without the use of them evil power cable splitters.
  10. Boot to usb device. Any news?

    pgppuppy: not being able to boot eg. WinXP from a USB drive is a limitation of the OS and not the hardware/bios. If I recall correctly, it's because of security issues. If booting XP from a USB device was possible, you could gain access to all computers able to boot from USB. That being said, I don't know if there's a workaround. I hope there is, though as I'd really like to be able to boot to a USB drive containing an image for all my computers so I could easily have a clean install.
  11. Powering a large number of drives

    MartinP: Thanx for the suggestion. I tried it and it helped ALOT. There is still a drive or two that restarts once in a while, but I'll try some other y-cables when I find them. Before there were atleast 4 drives that restarted almost constantly. Jeffy82: Although my problem is already much closer to a solution, I think I still have to get me some of them T-splitters. Sounds like the best solution. Thank you very much for the tip :-)
  12. Powering a large number of drives

    The 520W PSU is an Aspire (I can't remember the model number) and the other one is an AOpen one. The 300W was used for a couple of years to power an overclocked Thunderbird and around 5-6 hard drives (most of them scsi 10k rpm and old 7200rpm ones) and a burner, cd-drive and dvd-drive (all three scsi). The Aspire PSU has successfully powered an overclocked P4 2.53 and up to ~14 IDE/SATA disks for several months. I only added an extra PSU because I was afraid to let a single PSU run 20 drives (because of fire hazards or whatnot if it was overloaded). As I said earlier, I'm fairly sure that the two PSUs are enough for the drives. What primarily convinces me that it's a cabling problem is that poking some of the wires will definitely make the disks click and spin up. That's the same thing that happens just before explorer crashes or the computer freezes - only then it does it by itself. Unfortunately I don't own a multimeter, so I'm not able to check the PSUs. While I'd prefer to trash all drives and go for fewer bigger drives, I'm afraid that making the cables myself are alot closer to what I can afford. I also really like the idea of ripping the connectors from old XT PSUs, but I don't know where I should get any. Either way I'll try the local electronic stores and see what they have. Thanx for all the input, guys. I really appreciate it :-) I'd still like to hear more about how you have done it, though.
  13. Powering a large number of drives

    Thanx, but I think my two PSUs are enough to power the drives - my problem is the power cables :-) The site you linked to estimates I need ~780W to run my system (or 810W to allow future upgrades. I have 820W in total.
  14. How to keep an IDE disc in sleep mode?

    Windows XP has a feature to optimize harddrives when the computer is idle (it optimizes the layout of files and folders on the drive). This feature is turned on by default. Maybe that's what makes your disks spin up even when you're not accessing them. As far as I recall, TweakUI and/or X-setup let you turn the feature off.
  15. 2nd broken WD1200JB - just bad luck?

    I once read in another thread that poor mounting could cause poor performance. Try taking the hd out of the case and see if that changes anything...